Panida Chalermpornchai. 2003. Development of a learning book on surveillance of the Rayong river for Subdistrict Administrative Organization. Field of Study Environmental Education, Mahidol University;

Panida Chalermpornchai. Development of a learning book on surveillance of the Rayong river for Subdistrict Administrative Organization. . Bangkok:Mahidol University, 2003.

Panida Chalermpornchai. (2003) Development of a learning book on surveillance of the Rayong river for Subdistrict Administrative Organization . Mahidol University/Bangkok.